Pyloderma tropicale Van, 2017, sp. nov.
Pyloderma tropicale sp. nov. Figures 86 a–d Material examined. Holotype RMNH Por. 10513, Suriname, ‘ Snellius O.C.P.S. ’ Guyana Shelf Expedition, station F46, 6.312°N 56.57°W, depth 25–29 m, bottom sand, 7 May 1966. Description. The holotype (Fig. 86 a) is fragmented, but assumed to have been origin...
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2017
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Online Access: | https://dx.doi.org/10.5281/zenodo.5698696 https://zenodo.org/record/5698696 |
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ftdatacite:10.5281/zenodo.5698696 |
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Open Polar |
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DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
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unknown |
topic |
Biodiversity Taxonomy Animalia Porifera Demospongiae Poecilosclerida Dendoricellidae Pyloderma Pyloderma tropicale |
spellingShingle |
Biodiversity Taxonomy Animalia Porifera Demospongiae Poecilosclerida Dendoricellidae Pyloderma Pyloderma tropicale Van, Rob W. M. Pyloderma tropicale Van, 2017, sp. nov. |
topic_facet |
Biodiversity Taxonomy Animalia Porifera Demospongiae Poecilosclerida Dendoricellidae Pyloderma Pyloderma tropicale |
description |
Pyloderma tropicale sp. nov. Figures 86 a–d Material examined. Holotype RMNH Por. 10513, Suriname, ‘ Snellius O.C.P.S. ’ Guyana Shelf Expedition, station F46, 6.312°N 56.57°W, depth 25–29 m, bottom sand, 7 May 1966. Description. The holotype (Fig. 86 a) is fragmented, but assumed to have been originally a single specimen of 10 x 5 cm in lateral expansion, less than 1 cm thick. The fragments are bladder-like with an irregular undulating semitransparent surface sheet with many tiny fistules. The interior is cavernous, with few skeletal structures. Color beige-brown in alcohol. Consistency soft but elastic. Skeleton. (Fig. 86 b) Loose choanosomal tracts of 100–150 µm diameter rise up from the substratum and fan out to carry the surface membrane. Spicules. (Figs 86 c–d) Oxeas only. Oxeas, straight, equidiametrical, with lance-shaped, slightly swollen sharply pointed apices; in shape and position in the skeleton there appear to be two (largely) overlapping categories, (1) shorter and thicker (Figs 86 c,c1), 134– 166 –189 x 6 – 7.3 –9 µm, and (2) longer and thinner (Figs 86 d,d1), 156– 183 –213 x 2.5– 3.4 –4.5 µm. Distribution and ecology. Guyana Shelf, on sandy bottom at 25–29 m depth. Etymology. The name reflects the unusual occurrence of a Pyloderma species in tropical waters. Remarks. No other sponges with these peculiar lance-shaped oxeas are known from the Central West Atlantic. Assignment of this unusual species to the genus Pyloderma is tentative, but presently the best fit. It can only be tested by comparison of additional material and/or molecular analyses to resolve this systematic hypothesis. The type species of Pyloderma , Southern Ocean Halichondria latrunculioides Ridley & Dendy, 1886 is pear-shaped and has much larger oxeas (up to 1200 µm), but the form of the latter is also lance-shaped like in the present species (cf. Van Soest 2002a). The only other species of Pyloderma , the New Zealand P. demonstrans Dendy, 1924 has chelae and sigmas, for which reason the (presently unaccepted) genus Manawa Bergquist & Fromont, 1988 was erected. If the present species indeed belongs to Pyloderma , then resurrection of Manawa might be considered. : Published as part of Van, Rob W. M., 2017, Sponges of the Guyana Shelf, pp. 1-225 in Zootaxa 1 on page 139, DOI: 10.5281/zenodo.272951 : {"references": ["Ridley, S. O. & Dendy, A. (1886) Preliminary report on the Monaxonida collected by H. M. S. ' Challenger'. Annals and Magazine of Natural History, (5) 18, 325 - 351, 470 - 493.", "Van Soest, R. W. M. (2002 a) Family Dendoricellidae Hentschel, 1923. In: Hooper, J. N. A. & Van Soest, R. W. M. (Eds.), Systema Porifera. A guide to the classification of sponges 1. Kluwer Academic / Plenum Publishers, New York, Boston, Dordrecht, London, Moscow, 567 - 571.", "Dendy, A. (1924) Porifera. Part I. Non-Antarctic sponges. Natural History Report. British Antarctic (Terra Nova) Expedition, 1910 (Zoology), 6 (3), 269 - 392."]} |
format |
Text |
author |
Van, Rob W. M. |
author_facet |
Van, Rob W. M. |
author_sort |
Van, Rob W. M. |
title |
Pyloderma tropicale Van, 2017, sp. nov. |
title_short |
Pyloderma tropicale Van, 2017, sp. nov. |
title_full |
Pyloderma tropicale Van, 2017, sp. nov. |
title_fullStr |
Pyloderma tropicale Van, 2017, sp. nov. |
title_full_unstemmed |
Pyloderma tropicale Van, 2017, sp. nov. |
title_sort |
pyloderma tropicale van, 2017, sp. nov. |
publisher |
Zenodo |
publishDate |
2017 |
url |
https://dx.doi.org/10.5281/zenodo.5698696 https://zenodo.org/record/5698696 |
long_lat |
ENVELOPE(-58.017,-58.017,-61.850,-61.850) |
geographic |
Antarctic Southern Ocean New Zealand Ridley |
geographic_facet |
Antarctic Southern Ocean New Zealand Ridley |
genre |
Antarc* Antarctic Southern Ocean |
genre_facet |
Antarc* Antarctic Southern Ocean |
op_relation |
http://publication.plazi.org/id/FF9178687757FFACFF83A36B907DFF9A http://zoobank.org/6D68A019-6F63-4AA4-A8B3-92D351F1F69B https://zenodo.org/communities/biosyslit https://dx.doi.org/10.5281/zenodo.272951 http://publication.plazi.org/id/FF9178687757FFACFF83A36B907DFF9A https://dx.doi.org/10.5281/zenodo.273037 http://zoobank.org/6D68A019-6F63-4AA4-A8B3-92D351F1F69B https://dx.doi.org/10.5281/zenodo.5698695 https://zenodo.org/communities/biosyslit |
op_rights |
Open Access info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5281/zenodo.5698696 https://doi.org/10.5281/zenodo.272951 https://doi.org/10.5281/zenodo.273037 https://doi.org/10.5281/zenodo.5698695 |
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1766267455399788544 |
spelling |
ftdatacite:10.5281/zenodo.5698696 2023-05-15T13:59:05+02:00 Pyloderma tropicale Van, 2017, sp. nov. Van, Rob W. M. 2017 https://dx.doi.org/10.5281/zenodo.5698696 https://zenodo.org/record/5698696 unknown Zenodo http://publication.plazi.org/id/FF9178687757FFACFF83A36B907DFF9A http://zoobank.org/6D68A019-6F63-4AA4-A8B3-92D351F1F69B https://zenodo.org/communities/biosyslit https://dx.doi.org/10.5281/zenodo.272951 http://publication.plazi.org/id/FF9178687757FFACFF83A36B907DFF9A https://dx.doi.org/10.5281/zenodo.273037 http://zoobank.org/6D68A019-6F63-4AA4-A8B3-92D351F1F69B https://dx.doi.org/10.5281/zenodo.5698695 https://zenodo.org/communities/biosyslit Open Access info:eu-repo/semantics/openAccess Biodiversity Taxonomy Animalia Porifera Demospongiae Poecilosclerida Dendoricellidae Pyloderma Pyloderma tropicale Taxonomic treatment article-journal Text ScholarlyArticle 2017 ftdatacite https://doi.org/10.5281/zenodo.5698696 https://doi.org/10.5281/zenodo.272951 https://doi.org/10.5281/zenodo.273037 https://doi.org/10.5281/zenodo.5698695 2022-02-08T13:42:09Z Pyloderma tropicale sp. nov. Figures 86 a–d Material examined. Holotype RMNH Por. 10513, Suriname, ‘ Snellius O.C.P.S. ’ Guyana Shelf Expedition, station F46, 6.312°N 56.57°W, depth 25–29 m, bottom sand, 7 May 1966. Description. The holotype (Fig. 86 a) is fragmented, but assumed to have been originally a single specimen of 10 x 5 cm in lateral expansion, less than 1 cm thick. The fragments are bladder-like with an irregular undulating semitransparent surface sheet with many tiny fistules. The interior is cavernous, with few skeletal structures. Color beige-brown in alcohol. Consistency soft but elastic. Skeleton. (Fig. 86 b) Loose choanosomal tracts of 100–150 µm diameter rise up from the substratum and fan out to carry the surface membrane. Spicules. (Figs 86 c–d) Oxeas only. Oxeas, straight, equidiametrical, with lance-shaped, slightly swollen sharply pointed apices; in shape and position in the skeleton there appear to be two (largely) overlapping categories, (1) shorter and thicker (Figs 86 c,c1), 134– 166 –189 x 6 – 7.3 –9 µm, and (2) longer and thinner (Figs 86 d,d1), 156– 183 –213 x 2.5– 3.4 –4.5 µm. Distribution and ecology. Guyana Shelf, on sandy bottom at 25–29 m depth. Etymology. The name reflects the unusual occurrence of a Pyloderma species in tropical waters. Remarks. No other sponges with these peculiar lance-shaped oxeas are known from the Central West Atlantic. Assignment of this unusual species to the genus Pyloderma is tentative, but presently the best fit. It can only be tested by comparison of additional material and/or molecular analyses to resolve this systematic hypothesis. The type species of Pyloderma , Southern Ocean Halichondria latrunculioides Ridley & Dendy, 1886 is pear-shaped and has much larger oxeas (up to 1200 µm), but the form of the latter is also lance-shaped like in the present species (cf. Van Soest 2002a). The only other species of Pyloderma , the New Zealand P. demonstrans Dendy, 1924 has chelae and sigmas, for which reason the (presently unaccepted) genus Manawa Bergquist & Fromont, 1988 was erected. If the present species indeed belongs to Pyloderma , then resurrection of Manawa might be considered. : Published as part of Van, Rob W. M., 2017, Sponges of the Guyana Shelf, pp. 1-225 in Zootaxa 1 on page 139, DOI: 10.5281/zenodo.272951 : {"references": ["Ridley, S. O. & Dendy, A. (1886) Preliminary report on the Monaxonida collected by H. M. S. ' Challenger'. Annals and Magazine of Natural History, (5) 18, 325 - 351, 470 - 493.", "Van Soest, R. W. M. (2002 a) Family Dendoricellidae Hentschel, 1923. In: Hooper, J. N. A. & Van Soest, R. W. M. (Eds.), Systema Porifera. A guide to the classification of sponges 1. Kluwer Academic / Plenum Publishers, New York, Boston, Dordrecht, London, Moscow, 567 - 571.", "Dendy, A. (1924) Porifera. Part I. Non-Antarctic sponges. Natural History Report. British Antarctic (Terra Nova) Expedition, 1910 (Zoology), 6 (3), 269 - 392."]} Text Antarc* Antarctic Southern Ocean DataCite Metadata Store (German National Library of Science and Technology) Antarctic Southern Ocean New Zealand Ridley ENVELOPE(-58.017,-58.017,-61.850,-61.850) |